5. You encounter a material that is white, powdery, with a low melting point, and no luster. Is this material likely to be made of a metal or a nonmetal? Justify your answer. (5 pts)

Non metal

Metals have high melting points, are not brittle or powdery, luster and are not white in colour

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.